Using a randomized experimental design with a control group, ten "at risk" tasks will be evaluated. The sample included 160 experienced nursing staff. Data were collected using: 1) Caregiver Data Form and Anthropometry Data Sheet; 2) 3-D Electromagnetic Tracking System; 3) EMG; and 4) modified Borg Scale for Perceived Comfort. Include: caregiver characteristics, joint torque, spinal forces, spinal tolerance limit and damage load limit, erector spinae surface EMG, joint angles, percent of population capable of performing each task by gender, velocity of lift, reach, heart rate, and perceived comfort.